package com.veo.interceptor;


import org.springframework.web.servlet.HandlerInterceptor;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

//定义登录拦截器
public class LoginInterceptor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        if (request.getSession().getAttribute("user") == null){
            request.setAttribute("msg","请先登录");
            request.getRequestDispatcher("/admin").forward(request,response);
        }
        return true;
    }
}
